Mirror



Dec. zo, 1927. 1,653,040

J. L. DRAKE 1 MIRROR Filed April 30, 1926 61H0: new

Patented Dec. 2d, 3.927.P

untransraras naar arf *oa-atea.

'somt L. Danna, csmomnd'omo, Ass'renoa 'ro ann manna-cimas snaar enses. COMPANY, or roanne, orne, a coaroaa'rron'or OHIG. s

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.Appleman mea anni se, rase. serian no. masas.

The present invention relates to mirrors,

. and to the process of producing the same.

An important object ofthe invention is to produce a mirror which will not shatter if subjected to a severe shock.

Another importantobject of the invention' is to produce a mirror by laminating a plurality of sheets of glass and a sheet of nonbrittle material, one ofthe laminations being properly silvered to produce a mirror.

, Still another'object of the invention is to provide a process forV producing a mirror, consistin in uniting a plurality of sheets of glass an a sheet of non-brittle material, one of the sheets being covered with a suitable silvering material, eitherbetore or aftler they have been united:

@ther objects and advantages of the' invention will become apparent during the course of the following description.`

In the drawings wherein like numerals are employed to designate like parts throughout the same, v v Fig. 1 is a sectional view showing the laminations before they brittle material havmg'a coating thereon, Fig. 2 is a diagrammatic representation of a form of press which may be used to unite the laminations, and

Figs. 3,V 4 and 5 are sectional views of various forms of the finished product.

In accordance with the present invention, a mirror is formed by uniting a plurality of sheets of material to form what is known in the art as laminated glass, oneof the laminations, comprising the finished sheet, being coated with a suitable silvering material.

In Fig. 1, the numerals 6 land 7 designate v two sheets of preferably transparent glass, while the numeral 8 designates a sheet of non-brittle material such as a cellulose comosition material. In the form shown in ig. 1, the non-brittle sheet of material 8 is provided with a coating 9.of some silvering material such as quick silver or the like. Ordinarily, in the production of mirrors, the .manufacturer makes his own mixture so that quick silver is mentioned by way of example only, and is not to be taken as a term of limitation. In other words, an material which will produce a suitable reicting surface is inclu ed in the present invention.

After the sheet of non-brittle material 8 has been suitably coated, as shown in Fig. 1,

.The heat and 'are united, the nonthe' laminations are united in vaccordance with any of' the well known processes of forming laminated glass. Ordinarily, some form .of binder is interposed between the laminations to insure a' good union when sub- Jected to the faction of heat vand pressure. pressure may be applied to the laminations by means of a heated press 10 shown in Fig. 2.

In Fig. 3 is shown the nished sheet as formed 1n accordance with the illustrationin Fig. 1, the arrow indicating the'- front of the finished mirror 1l. In lFigli the front sheet 12 is provided with the coating 13 in- -stead 'of the non-brittle sheet as in Fig. 1.

surface is placed in contact with the nonbrttle sheet 14 or a bindervbetween the two,

and together with the sheet 'of glass l5 v united. In the mirrors shown in Figs. 3 and 4, the two back sheets, namely, 7 in Fia. 3, and 15V in Fig.-4, need not necessarilyv be 4a high grade sheet, yas this sheet is not seen and'will not cause distortion. In both of the forms shown-in Figs. 3 and'4, one of the laminations is treated with a suitable silvering material before the various laminations are united. In Fig. 5 .a sheet of laminated glass, comprising two sheets of glass 16 and 17, are united with a sheet of nonbrittle material 18 interposed therebetween. After these three laminations have been combined, the exposed surface of the sheet 17 is given a suitable coating 19. A mirror. formed in accordance withthe present invention may become broken due to a severe shock, but the glass will not scatter as the non-brittle sheet of material interposed between the glass sheets vwill retain the frag- .ments of glass even if they are broken. Ot'

soy

course a mirror formed in this manner will l stand a much greater shock or blow than the ordinary mirror before it will become fractured.

It is to be understood that the form of the4 invention herewith shown and described is to be taken as the preferred embodiment of the same, and that various changes in the shape, size and arrangement" of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Lclaim l mirror :formed from a plurality of slicets 0 1. As. anew article of manufacture, a

glass and a sheet of non-brittle material.

2. AS a new article of manufacture, a mirror formed from a plurality of sheets of glass and a bliect of nonbrittle material, one of said sheets being silvered before it is united\vith the ether sheets.

3. AS a new article of manufacture, amirf \ror\ formed from a plurality of sheets of A10 glass and a sheet of non-brittle material, one of said sheets being slvered.

Signed at Toledo, in the county of Lucas,

and State of (')hiothis 28th day of April,

. JOHN L. BRAKE. 

